Strangely, Peter has no father in his family tree, which simply shows Dora as his mother. This has led some players to believe that he was adopted or born out-of-wedlock. Dora has the lifetime want to "Have 6 Grandchildren". When the game starts, she already has three - David, Sharla and Tommy - and she will not die of old age before Samantha's twins are born. However, since there is a bug in game, Peter will not be the actual father, and Dora will not be the grandmother of the twins. This will be fixed if the game was patched prior to loading the neighborhood with Seasons installed.
Unfortunately for Dora, the birth of the twins brings the household up to its maximum capacity of eight Sims, and without the use of cheats or the Elixir of Life, or sending David to University, Dora will die of old age before David is old enough to move out and free up space in the household for a sixth child. When the family is first moved into a lot, she will be on her 6th day as an elder, and will have 6 days left before she dies of old age.
According to Dora's SimDNA in SimPE, her hair was brown before it turned grey. Her genetics and facial structure seem to be a result of the genetic combination of Peter and Samantha, except that Dora has no genetics for brown eyes. Her character data can be found in The Sims Castaway Stories using SimPE.
Unless the Elixir of Life is used, or the player decides to age Sharla up a day early, Dora will die on the day Sharla becomes a teenager. Strangely, if she is extracted with SimPE to Body Shop, she will be thin instead of fat. This is also the case of Buck Grunt, and Antonio, and Claudio Monty. At the start of the game she is friends with Peter, David, Sharla, and Tommy, and best friends with Samantha.